just get some used satellite dishes(ask any dealer/installer, they get lots from upgrades which include new dishes w/ dual LNA's)
get a couple of wifi bridges which have Power Over Ethernet, and then install them into the dishes where the LNA's are supposed to be(precisely where the face of the LNA was). that will be good for several KM's. D-link makes a directional antenna with a magnet-mount that is fantastic for installing on a dish because it focusses all the power at the dish instead away from the dish, so you can get many times the power again, should you need it. the dlink antenna will also come with a 6 foot cable so that the bridge can be mounted in a safer place away from the sun/rain.
I use a single dish at one end of a 2Km link with the D-link feedhorn, and an ordinary access point with stock omni antenna 30 feet up the side of a tower for the other end and the link signals show -25 signal strength!
hope that helps |